Local Calling Guide

Area code/prefix search

Search area code/prefix (NPA/NXX)
  • Effective date searches are available only for US area codes. Our sources for non-US NPA-NXX data do not provide this information.
  • If you want to search an entire area code regardless of activity, leave both the next and past days fields set to zero.

Elizabethton, TN

<< 1 2

NPA-NXX BLOCK Switch OCN LATA LIR Eff date Disc date
423-895 9 JHCYTNXCXIY  6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2007-08-06   
423-997 A   124F BANDWIDTH.COM CLEC, LLC - TN 956   2025-10-04   
423-997 0   124F BANDWIDTH.COM CLEC, LLC - TN 956   2025-10-04   
423-997 1   124F BANDWIDTH.COM CLEC, LLC - TN 956   2026-06-06   
423-997 7   145J TERRA NOVA TELECOM INC. 956   2025-10-10   
423-997 8   6673 CELLCO PARTNERSHIP DBA VERIZON WIRELESS - TN 956   2026-03-03   

<< 1 2

Last updated: Sun, 17 May 2026 03:26:51 UTC

Sponsored by: Execulink Telecom

Like this site? We accept donations via PayPal.